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JOFRA STS-100 SERIES REFERENCE PROBES
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Fast response time, low immersion depth, small physical sizes, and low drift rate |
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S econdary
T emperature
S tandard
The STS-100 A series of industrial reference probes is based on many years of
experience in temperature measurement and calibration. This series features fast response times, low immersion depth, small physical size, and a specified low drift rate, even at high temperatures.
Wide temperature range -150 to 650°C (-238 to 1202°F)
High system accuracy 0.03°C (0.054°F) including the
DTI-1000)
Long-term burn-in procedure up to 650°C (1200°F)
Perfect for dry-block calibrators
Special 90° angled probe for use in dry-blocks. Room
for sensor under test
Accredited certificate up to 650°C (1202°F) as standard
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Quality defined
It is not easy to make a good quality reference probe. The main requirement of a reference probe is stability. This means minimal drift as a function of operating time at the actual temperature. The less the probe drifts, the lower the measurement uncertainty.
Small diameter - fast response
The STS-100 A series has a relatively small diameter. This leaves optimum space for sensors-under-test in the dry-block and ensures a fast response time. A fast reacting sensor will optimize the measurement information.
Reduced hysteresis and drift
The sensing element is comprised of a pure platinum coil. This coil is suspended in a way that minimizes stress and ensures a near zero hysteresis value.
The main reason for drift within a sensor assembly is im-purities within the element, especially at temperatures above 350°C (660°F). All internal parts must be cleaned thoroughly. AMETEK has developed a unique cleaning method for the internal bore of the Inconel® sheath. The platinum sensor is embedded within an ultra-clean, temperature resistant ceramic, and assembly of the components is performed in a clean room. These precautions ensure minimum contamination of the element during use and provide the user with the best possible performance.
Ageing/annealing
Once the probes are assembled, they are subjected to a long approval process. This includes mechanical stress reduction of the entire assembly as well as ageing the sensor element itself. The purpose of ageing the sensor is to remove the initial drift.
The final quality-certificate-check
Upon completion of every certificate, after final calibration of the probe, examination and approval cycles are performed according to our established procedures. The critical verification is to ensure that the difference between the initial and the final 0°C (32°F) measurement on the certificate meets our minimum tolerance. These requirements are based on a vast amount of data, which has been evaluated statistically. This value indicates if the probe has a sufficient long-term stability.
JOFRA DTI-1000 Reference Thermometer
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See more Ametek
Temperature Calibrators
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